Manufacture



(No Model.) 2 Sheets--Sheet 1.

E. LUCAS.

MANUFACTURE OF HINGES.

lmisellte-dz Dec. 1, 1885.

(No Model.)

2 Sheets-Sheet 2. E. LUCAS.

MANUFACTURE OF HINGE S.

No: 331,416. Patented Den 1, 1885 rrrcn.

EDWIN LUCAS, OF KENSINGTON, ASSIGNOR TO THE PECK, STOIV 87 WILCOX COMPANY, OF SOUTHINGTON, CONNECTICUT.

SPECIFICATION forming part of Letters Patent No. 331, %16, dated December 1, 1885.

Application filed September 14, 1885. Serial No. 177,028. (No modeLl To all whom it may concern.-

Be it known that I, EDWIN LUCAS, a citizen 1 of the United States, residing at Kensington,

in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in the Manufacture of Hinges, of which the following is a specification.

My invention relates to improvements in the process of manufacturing hinges; and the objects of my invention are to more rapidly, and, consequently, more cheaply produce certain parts of the hinge, and to make the same of one piece of metal, so that the part of the hinge which I make shall be more solid and durable than those heretofore made from two pieces welded together.

In the accompanying drawings, Figures 1, 2, 3, 4, and 5 show in side elevation the successive series of forms into which I throw the stock in producing the hinge. Fig. 6 is asectional View of-the holding and heading dies used in the manufacture of my hinges. Fig. 7 is a reverse plan View of the upper die for subsequent operation upon my hinge. Fig. 8 is a front elevation of the same. Fig. 9 is a side elevation of the same. Fig. 10 is a front elevation of the lower die for use in connection with the die shown in Figs. 7, 8, and 9; and Fig. 11 is a top view of the die shown in Fig. 10.

The hinges which I manufacture are of the class known as gate or barn-door hinges, and the improvement now to be described relates only to one-half of the hinge. The eye or companion half of said hinge may be formed in any ordinary manner.

I select round bars of iron of the proper size for the main portion of my hinge, and cut them into suitable lengths, as shown in Fig. 1.

I have found in practice that all of the operations hereinafter described may be performed at one heat. After heating, I place said rod, Fig. 1, within a pair of grooved gripping-dies, A A, (see Fig. 6,) said dies having a matrix, a, at the end which fronts the header B. This matrix, although round in cross-section, is eccentric to the axis of the holdinggrooves of the gripping-dies, as shown. The

header B, I provide witha suitable orifice, 0, for receiving the end of the blank. These gripping-dies and the header B may be arranged in any ordinary bolt heading or upsetting machine. After the dies A A have been forced together suffioiently to holdthe rod, the header B is forced endwise upon the rod, so as to upset aportion of the metal and form the enlargement b, as shown in Figs. 2,

3, and 4. The stock in the form shown in Fig. 2 is then placed between the die-grooves e eof the die-blocks C and .C, so as to reduce the portion which is to form the pintle of the hinge, after which it is further reduced by be ing placed in the die-grooves d d of the same die-blocks, thereby throwing the stock into the form represented in Fig. 3, in which figure (also in Figs. 4 and 5) f designates the pintle.

I then bend the body of the rod in a vise, over the horn of an anvil, or by any convenient and simple mechanism into the form in which it is represented in Fig. 4. WVhen in this form, the pintle f is inserted within the orifice g in the lower die-block, C, when the die-block C is forced upon it, the diegroove h of said block acting upon the body of the hinge or rod, and the circular die or matrix It upon the enlargement b, thereby forcing the stock into its final form, as shown in Fig. 5, and producing this part of the hinge all solid from a single piece of metal without flaw or seam. The position of the orifice 9 within the die-block C is indicated by the broken lines in Fig. 10.

While I have herein shown and described these several dies as the best means known to me for throwing the stock into the succession of forms represented in Figs. 1, 2, 3, 4, and 5, yet it is evident that other dies and means may be employed for throwing the stock into the same forms and producing substantially the same results, and while I prefer to first throw 0 the stock from the form shown in Fig. 1 into that shown in Fig. 2, it is evident that substantially the advantages of my invention may be reaped by first reducing the end of the rod to form the pintlef, confining that end within 5 a gripping-die, and upsetting the portion adjacent thereto to form the enlargement or collar b, in which case the form shown in Fig. 2

would not appear during the process; but I prefer to form my hinges as first described.

I am aware that a prior patent shows and describes dies and a machine for making hinge- 5 hooks, in whicha heated rod is clamped between dies, with a sufficient length for the pintle projecting, then said projecting end is bent downward, and then adie moves against the side of the pintle, upsets the stock at its base when within the dies, which impart the desired form, after which the fin that extends along the length of the pintle on opposite sides is trimmed off by cutting-dies; also, that a prior patent and a reissue thereof show and describe amethod of making hinge-hooks with an upset seat at the base of the pintle, after which description both specifications summarize the process as follows: It will be observed that in the method described a rod, bar, or blank is first bent to form the shank and pin, and after the bending is done a seat for the eyehalf of the hinge is upset at the base of the pin at or near its junction with the shank, and that these steps must follow each other in the order set forth. All of said prior art is hereby disclaimed. My improvement is clearly distinguished therefrom in the fact that all the upsetting is done in the straight rod before bending, and in the fact that the collar or seat at the base of the pintle has its final form given it by lateral swaging instead of by upsetting.

I claim as my invention 1. That improvement in the manufacture of hinges which consists of upsetting a portion of 5 a straight rod at the point intended for the base of the pintle, then curving the body of the rod, and then swaging the upset portion and curved body of the rod into form, substantially as described, and for the purpose specio fied.

2. That improvement in the manufacture of hinges which consists of throwing thestock into the successive series of forms represented in Figs. 1 to 5, inclusive, substantially as described, and for the purpose specified.

3. That improvement in the manufacture of hinges which consists of forming upon a straight rod, at the point intended for the base of the pintle, a circular enlargement, which is eccentric to said rod, then curving the body of said rod, and then swaging said curved body and eccentric enlargement laterally, substantially as described, and for the purpose specified.

EDWIN LUCAS.

Witn esses:

FRANK L. WILGOX, THERON UPsoN. 

